Jump to main content
Jump to site search

Issue 13, 2017
Previous Article Next Article

Side-chain engineering for fine-tuning of molecular packing and nanoscale blend morphology in polymer photodetectors

Author affiliations

Abstract

A series of four low-bandgap polymers containing diketopyrrolopyrrole (DPP) and dithienopyrrole (DTP) functionalized with four different side chains of 4-phenyl, 4-octylphenyl, 4-(octyloxy)phenyl and 4-(octylthio)phenyl were synthesized. Subtle changes in the side chains of polymers are found to effectively affect the molecular stacking and crystallinity, film morphology, and photodetector performance. The best polymer photodetector displays an average external quantum efficiency (EQE) of 40% and a specific detectivity (D*) of over 1013 Jones in the spectral region of 350–960 nm under −0.1 V bias, which is among the best EQE and D* values of all the known UV–vis–NIR polymer photodetectors reported to date.

Graphical abstract: Side-chain engineering for fine-tuning of molecular packing and nanoscale blend morphology in polymer photodetectors

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 16 Jan 2017, accepted on 08 Mar 2017 and first published on 09 Mar 2017


Article type: Paper
DOI: 10.1039/C7PY00087A
Citation: Polym. Chem., 2017,8, 2055-2062
  •   Request permissions

    Side-chain engineering for fine-tuning of molecular packing and nanoscale blend morphology in polymer photodetectors

    L. Hu, W. Qiao, X. Zhou, J. Han, X. Zhang, D. Ma, Y. Li and Z. Y. Wang, Polym. Chem., 2017, 8, 2055
    DOI: 10.1039/C7PY00087A

Search articles by author